Overpressure interlocking protection system of tower top pressure control valve

Abstract

The utility model relates to the technical field of waste gas treatment, in particular to an overpressure interlocking protection system of a tower top pressure control valve. The system comprises a collection module, a discharge module, a volatile organic compound module, a combustion module and an emergency module, and the input end of the collection module communicates with the output end of the discharge module and the output end of the volatile organic compound module through pipelines; the output end of the collection module communicates with the input end of the combustion module and the input end of the emergency module through pipelines. According to the overpressure interlocking protection system of the tower top pressure control valve, the collecting module is used for collecting waste gas from the discharging module and the volatile organic compound module, and the waste gas in the collecting module is treated through the combustion module and then discharged into the atmosphere; and then the emergency module is used for carrying out emergency treatment on the waste gas in the collecting module when the combustion module does not work normally, so that the air pressure in the collecting module is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas treatment, in particular to an overpressure interlocking protection system of a tower top pressure control valve. Background Art

[0002] In the exhaust main pipe safety assessment, it was found that the failure of the exhaust control valve PV-12102 of the T-1225 tower, human error in operation, and drift of PT-12102A would cause the PV-12102 exhaust control valve to be fully opened, resulting in an overpressure condition in the exhaust main pipe. At the same time, when the manual valve in the furnace area of ​​the TO furnace and CO furnace is mistakenly closed, or the regulating valves HV-32001 and FV-33002 are mistakenly closed, the exhaust main pipe will also be overpressured.

[0003] In view of this, we propose an overpressure interlock protection system for the tower top pressure control valve to improve the shortcomings of the existing technology. Utility Model Content

[0004] The utility model aims to provide an overpressure interlock protection system for a tower top pressure control valve to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides an overpressure interlock protection system for a tower top pressure control valve, comprising a collection module, an emission module, a volatile organic compound module, a combustion module and an emergency module, wherein the input end of the collection module is respectively connected to the output end of the emission module and the output end of the volatile organic compound module through a pipeline, and the output end of the collection module is respectively connected to the input end of the combustion module and the input end of the emergency module through a pipeline, the collection module is used to collect waste gas from the emission module and the volatile organic compound module, the combustion module is used to treat the waste gas in the collection module before discharging it into the atmosphere, and the emergency module is used to perform emergency treatment on the waste gas in the collection module when the combustion module does not work normally, thereby reducing the air pressure in the collection module.

[0006] As a further improvement of the present technical solution, the collection module includes a waste gas main pipe, a flare system and a first flare cut-off valve. An overpressure interlock body is provided in the waste gas main pipe. The output end of the waste gas main pipe and the input end of the flare system are connected through a pipeline. The first flare cut-off valve is arranged on the pipeline between the waste gas main pipe and the flare system.

[0007] As a further improvement of the present technical solution, the emission module includes an exhaust gas emission tower and an exhaust gas control valve. The output end of the exhaust gas emission tower and the input end of the exhaust gas main pipe are connected through a pipeline. The exhaust gas control valve is arranged on the pipeline between the exhaust gas emission tower and the exhaust gas main pipe. A controller is provided on the exhaust gas control valve.

[0008] As a further improvement of the technical solution, the volatile organic compound module includes VOC S Collection main, VOC S Second cut-off valve and VOC S The first shut-off valve, the VOC S The output end of the collecting main pipe is connected to the input end of the exhaust main pipe through a pipeline. S The second cut-off valve is set at VOC S On the pipe between the collecting main pipe and the exhaust main pipe.

[0009] As a further improvement of the present technical solution, the combustion module includes a furnace area and a second flare shut-off valve, the input end of the furnace area and the output end of the exhaust gas main are connected through a pipeline, the second flare shut-off valve is arranged on the pipeline between the furnace area and the exhaust gas main, the furnace area includes a TO furnace and a CO furnace, the output end of the furnace area and the input end of the TO furnace and the input end of the CO furnace are all connected through pipelines, a first regulating valve is provided on the pipeline between the TO furnace and the furnace area, and a second regulating valve is provided on the pipeline between the CO furnace and the furnace area.

[0010] As a further improvement of the present technical solution, the emergency module includes an emergency adsorption system and a vacuum cut-off valve, the input end of the emergency adsorption system and the output end of the exhaust gas main pipe are connected through a pipeline, the vacuum cut-off valve is arranged on the pipeline between the emergency adsorption system and the exhaust gas main pipe, and the pipeline between the emergency adsorption system and the exhaust gas main pipe is provided with a vacuum system, the vacuum system includes a first vacuum exhaust system and a second vacuum exhaust system, the input end of the first vacuum exhaust system and the input end of the second vacuum exhaust system are both connected to the output end of the exhaust gas main pipe through a pipeline, the output end of the first vacuum exhaust system and the output end of the second vacuum exhaust system are both connected to the input end of the emergency adsorption system through a pipeline, and the emergency adsorption system includes several emergency activated carbon canisters.

[0011] As a further improvement of the technical solution, the input end of the second vacuum exhaust system is connected to the VOC S The output end of the collecting main pipe is connected through a pipeline, and the VOC S The first cut-off valve is set between the second vacuum exhaust system and VOC S On the pipes between the collecting mains.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. In the overpressure interlock protection system of the tower top pressure control valve, a collection module is provided to collect exhaust gas from the emission module and the volatile organic compound module, and the exhaust gas in the collection module is treated by the combustion module before being discharged into the atmosphere. The emergency module is then used to perform emergency treatment on the exhaust gas in the collection module when the combustion module does not work normally, thereby reducing the air pressure in the collection module. Specifically, when the air pressure in the exhaust gas main pipe exceeds the set value of the overpressure interlock body, the system will trigger the overpressure interlock body.

[0014] 2. In the overpressure interlock protection system of the tower top pressure control valve, the overpressure interlock body is used to prevent the exhaust gas control valve from being fully opened due to failure of the exhaust gas control valve, human error, and drift of the controller, and to avoid damage to the furnace area equipment caused by overpressure in the exhaust gas main pipe; and to avoid large fluctuations or even shutdowns in the first vacuum exhaust gas system and the second vacuum exhaust gas system.

[0015] 3. In the overpressure interlock protection system of the tower top pressure control valve, the overpressure interlock body is used to prevent the waste gas from being blocked and overpressured due to misoperation in the furnace area, resulting in overpressure of the T-1225 tower, overpressure of the first vacuum exhaust system and the second vacuum exhaust system, and even shutdown. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall process of an embodiment of the utility model;

[0017] Figure 2 This is a schematic diagram of the connection of each unit in the collection module of an embodiment of the utility model;

[0018] Figure 3 This is a schematic diagram of the connection of each unit in the discharge module of the embodiment of the utility model;

[0019] Figure 4 This is a schematic diagram of the connection of each unit in the volatile organic compound module of the embodiment of the utility model;

[0020] Figure 5 This is a schematic diagram of the connection of each unit in the combustion module of an embodiment of the utility model;

[0021] Figure 6 This is a schematic diagram of the connection of each unit in the emergency module of the embodiment of the utility model;

[0022] Figure 7 This is a schematic diagram of the connection between the volatile organic compound module and the emergency module according to an embodiment of the utility model.

[0023] The meaning of each number in the figure is:

[0024] 10. Collection module; 11. Exhaust gas main pipe; 12. Flare system; 13. First flare cut-off valve; 14. Overpressure interlock body;

[0025] 20. Emission module; 21. Exhaust emission tower; 22. Exhaust control valve; 23. Controller;

[0026] 30. Volatile organic compound module; 31. VOC S Collection main; 32. VOC S Second cut-off valve; 33, VOC S First shut-off valve;

[0027] 40. Combustion module; 41. Furnace area; 42. Second torch cut-off valve; 43. TO furnace; 44. CO furnace; 45. First regulating valve; 46. Second regulating valve;

[0028] 50. Emergency module; 51. Vacuum system; 52. Vacuum shut-off valve; 53. First vacuum exhaust system; 54. Second vacuum exhaust system; 55. Emergency adsorption system; 56. Emergency activated carbon canister. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] Example: See Figure 1-Figure 7 As shown, this embodiment provides an overpressure interlock protection system for a tower top pressure control valve, including a collection module 10, an emission module 20, a volatile organic compound module 30, a combustion module 40 and an emergency module 50. The input end of the collection module 10 is connected to the output end of the emission module 20 and the output end of the volatile organic compound module 30 through a pipeline, respectively. The output end of the collection module 10 is connected to the input end of the combustion module 40 and the input end of the emergency module 50 through a pipeline, respectively. The collection module 10 is used to collect waste gas from the emission module 20 and the volatile organic compound module 30. The combustion module 40 is used to treat the waste gas in the collection module 10 and then discharge it into the atmosphere. The emergency module 50 is used to perform emergency treatment on the waste gas in the collection module 10 when the combustion module 40 is not working normally, thereby reducing the air pressure in the collection module 10.

[0031] Working principle: When the overpressure interlock protection system of the tower top pressure control valve provided by the utility model is used, the collection module 10 is set to collect the exhaust gas from the emission module 20 and the volatile organic compound module 30, and the exhaust gas in the collection module 10 is treated by the combustion module 40 and then discharged into the atmosphere, and then the emergency module 50 is used to perform emergency treatment on the exhaust gas in the collection module 10 when the combustion module 40 does not work normally, thereby reducing the air pressure in the collection module 10. Specifically, when the air pressure in the exhaust gas main pipe 11 exceeds the set value of the overpressure interlock body 14, the system will trigger the overpressure interlock body 14.

[0032] In order to collect the waste gas from the emission module 20 and the volatile organic compound module 30, the collection module 10 includes a waste gas main pipe 11, a flare system 12 and a first flare shut-off valve 13. An overpressure interlock body 14 is provided in the waste gas main pipe 11. The output end of the waste gas main pipe 11 and the input end of the flare system 12 are connected through a pipeline. The first flare shut-off valve 13 is arranged on the pipeline between the waste gas main pipe 11 and the flare system 12. The emission module 20 includes an exhaust gas emission tower 21 and an exhaust gas control valve 22. The output end of the exhaust gas emission tower 21 and the input end of the exhaust gas main pipe 11 are connected through a pipeline. The exhaust gas control valve 22 is arranged on the pipeline between the exhaust gas emission tower 21 and the exhaust gas main pipe 11. A controller 23 is arranged on the exhaust gas control valve 22. The volatile organic compound module 30 includes a VOC S Collection main 31, VOC S Second shut-off valve 32 and VOC S First shut-off valve 33, VOC S The output end of the collecting main pipe 31 is connected to the input end of the exhaust main pipe 11 through a pipeline. S The second shut-off valve 32 is provided at the VOC S On the pipeline between the collection main pipe 31 and the exhaust main pipe 11; when the combustion module 40 is working normally, the first flare shut-off valve 13, the tail gas control valve 22 and the second shut-off valve 32 are all kept open, and VOC S The exhaust gas in the collecting main pipe 31 and the tail gas emission tower 21 can normally enter the exhaust gas main pipe 11, and the exhaust gas main pipe 11 then transports the exhaust gas to the combustion module 40 for processing.

[0033] In order to realize the treatment of the exhaust gas in the collection module 10 before discharging it into the atmosphere, the combustion module 40 includes a furnace area 41 and a second flare shut-off valve 42. The input end of the furnace area 41 and the output end of the exhaust gas main pipe 11 are connected by a pipeline. The second flare shut-off valve 42 is arranged on the pipeline between the furnace area 41 and the exhaust gas main pipe 11. The furnace area 41 includes a TO furnace 43 and a CO furnace 44. The output end of the furnace area 41 and the input end of the TO furnace 43 and the input end of the CO furnace 44 are all connected by pipelines. A first regulating valve 45 is provided on the pipeline between the TO furnace 43 and the furnace area 41, and a second regulating valve 46 is provided on the pipeline between the CO furnace 44 and the furnace area 41. After the exhaust gas main pipe 11 transports the exhaust gas to the furnace area 41, different types of exhaust gases are respectively introduced into the TO furnace 43 and the CO furnace 44 for treatment, and are discharged into the atmosphere after being treated to meet the standards.

[0034] In order to carry out emergency treatment of the exhaust gas in the collection module 10 when the combustion module 40 is not working normally, the emergency module 50 includes an emergency adsorption system 55 and a vacuum cut-off valve 52. The input end of the emergency adsorption system 55 and the output end of the exhaust gas main pipe 11 are connected through a pipeline. The vacuum cut-off valve 52 is arranged on the pipeline between the emergency adsorption system 55 and the exhaust gas main pipe 11. The pipeline between the emergency adsorption system 55 and the exhaust gas main pipe 11 is provided with a vacuum system 51. The vacuum system 51 includes a first vacuum exhaust system 53 and a second vacuum exhaust system 54. The input end of the first vacuum exhaust system 53 and the input end of the second vacuum exhaust system 54 are both connected to the output end of the exhaust gas main pipe 11 through a pipeline. The output end of the first vacuum exhaust system 53 and the output end of the second vacuum exhaust system 54 are both connected to the input end of the emergency adsorption system 55 through a pipeline. The emergency adsorption system 55 includes a plurality of emergency activated carbon canisters 56; the input end of the second vacuum exhaust system 54 is connected to the VOC S The output end of the collecting main pipe 31 is connected through a pipeline, and the VOC S The first shut-off valve 33 is provided between the second vacuum exhaust system 54 and the VOC S The overpressure interlock body 14 opens the first flare shut-off valve 13, closes the second flare shut-off valve 42, opens the first vacuum exhaust system 53, the second vacuum exhaust system 54 to the emergency adsorption system 55 vacuum shut-off valve 52, opens the VOC S Collect VOC from main pipe 31 to emergency adsorption system 55 S The first shut-off valve 33 closes the VOC S Second shut-off valve 32 .

[0035] The overpressure interlock protection system of the tower top pressure control valve provided in the utility model is used to collect the exhaust gas from the emission module 20 and the volatile organic compound module 30 through the collection module 10. Specifically, when the combustion module 40 works normally, the first flare shut-off valve 13, the tail gas control valve 22 and the second shut-off valve 32 are all kept in an open state, and the VOC S The exhaust gas in the collection main pipe 31 and the tail gas emission tower 21 can enter the exhaust main pipe 11 normally, and the exhaust main pipe 11 then transports the exhaust gas to the combustion module 40 for treatment; the exhaust gas in the collection module 10 is treated by the combustion module 40 and then discharged into the atmosphere. Specifically, after the exhaust main pipe 11 transports the exhaust gas to the furnace area 41, different types of exhaust gas are respectively introduced into the TO furnace 43 and the CO furnace 44 for treatment, and then discharged into the atmosphere after the treatment meets the standards; and then the emergency module 50 is used to When the block 40 is not working properly, the exhaust gas in the collection module 10 is urgently treated to reduce the air pressure in the collection module 10. Specifically, when the air pressure in the exhaust main pipe 11 exceeds the set value of the overpressure interlock body 14, the system will trigger the overpressure interlock body 14; the overpressure interlock body 14 opens the first flare cut-off valve 13, closes the second flare cut-off valve 42, opens the first vacuum exhaust system 53, the second vacuum exhaust system 54 to the vacuum cut-off valve 52 of the emergency adsorption system 55, and opens the VOC S Collect VOC from main pipe 31 to emergency adsorption system 55 S The first shut-off valve 33 closes the VOC S Second shut-off valve 32 .

[0036] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. An overpressure interlock protection system for a tower top pressure control valve, characterized in that: The invention comprises a collection module (10), an emission module (20), a volatile organic compound module (30), a combustion module (40) and an emergency module (50); the input end of the collection module (10) is respectively connected to the output end of the emission module (20) and the output end of the volatile organic compound module (30) through a pipeline; the output end of the collection module (10) is respectively connected to the input end of the combustion module (40) and the input end of the emergency module (50) through a pipeline; the collection module (10) is used to collect waste gas from the emission module (20) and the volatile organic compound module (30); the combustion module (40) is used to treat the waste gas in the collection module (10) and then discharge it into the atmosphere; and the emergency module (50) is used to perform emergency treatment on the waste gas in the collection module (10) when the combustion module (40) is not working normally, thereby reducing the air pressure in the collection module (10).

2. The overpressure interlock protection system of the tower top pressure control valve according to claim 1 is characterized in that: The collection module (10) comprises an exhaust gas main pipe (11), a flare system (12) and a first flare shut-off valve (13); an overpressure interlock body (14) is provided in the exhaust gas main pipe (11); the output end of the exhaust gas main pipe (11) and the input end of the flare system (12) are connected via a pipeline; and the first flare shut-off valve (13) is arranged on the pipeline between the exhaust gas main pipe (11) and the flare system (12).

3. The overpressure interlock protection system of the tower top pressure control valve according to claim 2 is characterized in that: The emission module (20) comprises an exhaust gas emission tower (21) and an exhaust gas control valve (22); the output end of the exhaust gas emission tower (21) and the input end of the exhaust gas main pipe (11) are connected via a pipeline; the exhaust gas control valve (22) is arranged on the pipeline between the exhaust gas emission tower (21) and the exhaust gas main pipe (11); and a controller (23) is provided on the exhaust gas control valve (22).

4. The overpressure interlock protection system of the tower top pressure control valve according to claim 3 is characterized in that: The volatile organic compound module (30) includes VOC S Collection main (31), VOC S Second shut-off valve (32) and VOC S The first shut-off valve (33), the VOC S The output end of the collecting main pipe (31) is connected to the input end of the exhaust main pipe (11) through a pipeline. S The second shut-off valve (32) is set at the VOC S On the pipeline between the collecting main pipe (31) and the exhaust main pipe (11).

5. The overpressure interlock protection system of the tower top pressure control valve according to claim 4 is characterized in that: The combustion module (40) comprises a furnace area (41) and a second flare shut-off valve (42); the input end of the furnace area (41) and the output end of the exhaust gas main pipe (11) are connected via a pipeline; the second flare shut-off valve (42) is arranged on the pipeline between the furnace area (41) and the exhaust gas main pipe (11); the furnace area (41) comprises a TO furnace (43) and a CO furnace (44); the output end of the furnace area (41) and the input end of the TO furnace (43) and the input end of the CO furnace (44) are all connected via a pipeline; a first regulating valve (45) is arranged on the pipeline between the TO furnace (43) and the furnace area (41); and a second regulating valve (46) is arranged on the pipeline between the CO furnace (44) and the furnace area (41).

6. The overpressure interlock protection system of the tower top pressure control valve according to claim 4, characterized in that: The emergency module (50) comprises an emergency adsorption system (55) and a vacuum shut-off valve (52); the input end of the emergency adsorption system (55) and the output end of the exhaust gas main pipe (11) are connected via a pipeline; the vacuum shut-off valve (52) is arranged on the pipeline between the emergency adsorption system (55) and the exhaust gas main pipe (11); a vacuum system (51) is arranged on the pipeline between the emergency adsorption system (55) and the exhaust gas main pipe (11); the vacuum system (51) comprises a first vacuum exhaust system (53) and a second vacuum exhaust system (54); the input end of the first vacuum exhaust system (53) and the input end of the second vacuum exhaust system (54) are both connected to the output end of the exhaust gas main pipe (11) via a pipeline; the output end of the first vacuum exhaust system (53) and the output end of the second vacuum exhaust system (54) are both connected to the input end of the emergency adsorption system (55) via a pipeline; the emergency adsorption system (55) comprises a plurality of emergency activated carbon canisters (56).

7. The overpressure interlock protection system of the tower top pressure control valve according to claim 6, characterized in that: The input end of the second vacuum exhaust system (54) is connected to the VOC S The output end of the collecting main pipe (31) is connected through a pipeline, and the VOC S The first shut-off valve (33) is provided between the second vacuum exhaust system (54) and the VOC S Collect on the pipeline between the main pipes (31).

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